Malicious PDF — malware analysis report

Static analysis result for SHA-256 c10f826e785599f6…

MALICIOUS

PDF

48.5 KB Created: 2020-08-30 14:11:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 454c39de7aa1c8ccfd27c7a9d5c075f2 SHA-1: 6256c2c58f6e6219c7f99086e3bf9cdcf82bc435 SHA-256: c10f826e785599f6b421f55debd41d671a224dcf7c410fac16d4a81a1e8dddbc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body, though heavily obfuscated, contains the same malicious URL. The primary attack vector appears to be social engineering via a deceptive document, leading users to click the malicious link.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/wix?keyword=backstage+pass+guide
    • https://cdn.shopify.com/s/files/1/0429/9204/2137/files/51810238145.pdf
    • https://cdn.shopify.com/s/files/1/0428/2574/4540/files/samufugipazojilemaxer.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6533/files/lip_sync_battle_rules_and_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0437/7224/8222/files/18222312424.pdf
    • https://cdn.shopify.com/s/files/1/0428/2515/4716/files/wiposewime.pdf
    • https://cdn.shopify.com/s/files/1/0432/0706/5760/files/crime_scene_investigation_report_examples.pdf
    • https://static.usrfiles.com/ugd/a44510_f6c0e0f69f7e4d12825e02be3329287a.pdf
    • https://static.usrfiles.com/ugd/b8c837_df74697b77a84e788a2804d7b87b6e6c.pdf
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/tale_of_two_wastelands_mod_list.pdf
    • https://cdn.shopify.com/s/files/1/0434/2795/4840/files/titan_generator_parts.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96258555683.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000671c.bin
1461b0a934e0ef4e7b9aaf0e9a4fa7b089d5334d753499a68be0dd845ebbe7ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x671C 5224 bytes
font_01_sfnt_off000078f0.bin
55fc68924f34b08f81e8d2aa0ae70085ba046ce8d971308c6ae6159d87615787		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78F0 2572 bytes
font_02_sfnt_off00008415.bin
a79b16dac2057cd3eab1bacc7f48791116403bd506e27913eb4f5c192699905b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8415 15900 bytes

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